E.463. Calculați: 1000−{[(276×2−1329:3)+(170−165:5)]:(12:6)+71}.1000-\{[(276 \times 2 - 1329:3) + (170-165:5)]:(12:6)+71\}.1000−{[(276×2−1329:3)+(170−165:5)]:(12:6)+71}.
806.806.806.
1000−{[(552−443)+(170−33)]:2+71}=1000-\{[(552 - 443) + (170-33)]:2+71\}=1000−{[(552−443)+(170−33)]:2+71}= =1000−[(109+137):2+71]==1000-[(109 + 137):2+71]==1000−[(109+137):2+71]= =1000−(123+71)=806.=1000-(123+71)=806.=1000−(123+71)=806.